curl 抓取yahoo boss 搜索结果

1.编写curl类，进行网页内容抓取 
 
class CurlUtil  
{  
    private $curl;  
    private $timeout = 10;  
  
    /** 
     * 初始化curl对象 
     */  
    public function __construct()  
    {  
        $this->curl = curl_init();  
        curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, 1);  
        curl_setopt($this->curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");  
        curl_setopt($this->curl, CURLOPT_HEADER, false); //设定是否显示头信息  
        curl_setopt($this->curl, CURLOPT_NOBODY, false); //设定是否输出页面内容  
        curl_setopt($this->curl, CURLOPT_CONNECTTIMEOUT, $this->timeout);  
        curl_setopt($this->curl, CURLOPT_FOLLOWLOCATION, true);  
        curl_setopt($this->curl, CURLOPT_AUTOREFERER, true);  
    }  
  
    /** 
     * 注销函数 关闭curl对象 
     */  
    public function __destruct()  
    {  
        curl_close($this->curl);  
    }  
  
    /** 
     * 获取网页的内容 
     */  
    public function getWebPageContent($url)  
    {  
        curl_setopt($this->curl, CURLOPT_URL, $url);  
        return curl_exec($this->curl);  
    }  
}  



2.创建curl对象 
 
$CurlUtil = new CurlUtil();    


3.抓取yahoo搜索结果 
 
function  getYahooSearch(CurlUtil $curl, $key)  
{  
    $key = urlencode($key);  
    $searchUrl = "http://boss.yahooapis.com/ysearch/web/v1/$key?appid=你的雅虎appid&lang=tzh&region=hk&abstract=long&count=20&format=json&start=0&count=10";  
    
    $josnStr = $curl->getWebPageContent($searchUrl);  
    $searchDataInfo = json_decode($josnStr, true);  
    $searchData = $searchDataInfo['ysearchresponse']['resultset_web'];  
  
    $returnArray = array();  
    if (!empty($searchData)) {  
        foreach ($searchData as $data) {  
            $returnArray[] = array("url" => $data['url'], "date" => $data['date'], 'title' => strip_tags($data['title']), 'description' => strip_tags($data['abstract']));  
        }  
    }  
    return $returnArray;  
}  


4.测试结果 
 
var_dump(getYahooSearch($CurlUtil, "百度"));